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ÇYTHYE 2018 column buckling

Axial compressive strength including flexural buckling per ÇYTHYE 2018 §9. Selects inelastic (0.658^λc²·Fy) or elastic (0.877/λc²·Fy) regime. φc=0.90.

Inputs

Steel grade

Profile series

Profile

Effective length KLmm

Buckling axis

Results

r [mm]—

KL/r—

Fe [MPa]—

λc—

Fcr [MPa]—

Regime—

φc·Pn [kN]—

Citations

§9Fe=π²E/(KL/r)²; λc≤1.5: Fcr=0.658^(λc²)·Fy; λc>1.5: Fcr=0.877/λc²·Fy. φc=0.90 (ÇYTHYE §9.1).

VERIFYColumn buckling formulas verified: inelastic regime confirmed; elastic (Euler) at high KL/r; strong axis always gives higher φPn than weak axis (same KL).

Engine: steel-d.js v0.1.0 · DB: SECTIONS-EN10365.v1 ·

Preliminary calculation tool. Final design requires full regulatory text and a licensed engineer.